Hello Mr. Bonfim
Pls. where did you find heatsinks and trafos?
Feel free to email me
Thanks for sharing pics
Jose Carlos
Pls. where did you find heatsinks and trafos?
Feel free to email me
Thanks for sharing pics
Jose Carlos
Oi JC beleza,
Os dissipadores vieram junto com o gabinete, veio tudo de navio da China, comprei há uns 2 anos atrás. Os trafos eu compro sempre com uma empresa de Hortolândia em SP.
Chama-se Hortotrafo, eles tem um preço muito bom.
abcs
Os dissipadores vieram junto com o gabinete, veio tudo de navio da China, comprei há uns 2 anos atrás. Os trafos eu compro sempre com uma empresa de Hortolândia em SP.
Chama-se Hortotrafo, eles tem um preço muito bom.
abcs
OOPS, Hello JC,
The heatsinks i bought with chassis in China 2 years ago, The transformers i got with a small company in Hortolândia, SP. The company is Hortotrafo.
cheers
The heatsinks i bought with chassis in China 2 years ago, The transformers i got with a small company in Hortolândia, SP. The company is Hortotrafo.
cheers
Not a scratch build, but a complete nut and bolt tear down and rebuild
Click the link for the full sequence.
An externally hosted image should be here but it was not working when we last tested it.
Click the link for the full sequence.
Hi Mr. Bonfim
Great thanks.. Let´s see if I have any chance in a future VSSA group buy. It seems that this one is over.
Great thanks.. Let´s see if I have any chance in a future VSSA group buy. It seems that this one is over.
BK100 test bed
Hi
Please find my modded mosfet BK module, I normally put on a chassis 1st to make sure every thing is ok before going into a case. I have used NOS mosfets 2sk174 etc .. relocated the mosfets on a L bracket for easy servicing etc.
best regards
Nick
Hi
Please find my modded mosfet BK module, I normally put on a chassis 1st to make sure every thing is ok before going into a case. I have used NOS mosfets 2sk174 etc .. relocated the mosfets on a L bracket for easy servicing etc.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
best regards
Nick
Last edited:
Hard wired own design
Hi all- my first post and nudie photo of my "Quasimodo" amp design.
This 50 watt continuous per channel into 4 ohms baby drives "Maggie" 1.7's surprisingly well according to Justin the new owner. He much prefers it to his previous Du$$un V8i which really surprised me!
Hi all- my first post and nudie photo of my "Quasimodo" amp design.
This 50 watt continuous per channel into 4 ohms baby drives "Maggie" 1.7's surprisingly well according to Justin the new owner. He much prefers it to his previous Du$$un V8i which really surprised me!
Attachments
post3173
no thumbs up.
look at and fix the loop areas of the various circuits and Inputs/Outputs
eg.
the input wiring from the input sockets travel alone to the selector switch.
The return wire runs off in a completely different direction. That is a loop and the area of that loop determines the sensitivity to reception of interference.
no thumbs up.
look at and fix the loop areas of the various circuits and Inputs/Outputs
eg.
the input wiring from the input sockets travel alone to the selector switch.
The return wire runs off in a completely different direction. That is a loop and the area of that loop determines the sensitivity to reception of interference.
good job...how is the noise performance....aluminum is good at shielding rf....😉
The Chassis screens the internals from external fields, if properly implemented.
The chassis does little to nothing at attenuating the fields emitted by numerous internal loops, where twisted pairs or close coupled pairs are not implemented.
The chassis does little to nothing at attenuating the fields emitted by numerous internal loops, where twisted pairs or close coupled pairs are not implemented.
@ Richard
Agree with Andrew with this one .... I know it might not sound right but i could call this project a waste of money
Regardless the schematic might be wonderful the implementation is horrible .
There is more : transistors used are of different make and something is telling me that the white labeled ones are really monkeys ( fakes )
Expect crosstalk and channel separation to hit the sky at least
The output capacitor is too small 0.22R cannot operate there the value is to low ... it doesn't do the job is supposed to be doing
still your parts look good but transistor amplifiers cannot be made like that
Looks like another tube guy trying to play in solid state areas ...
Sorry for that is just a personal opinion ...
Agree with Andrew with this one .... I know it might not sound right but i could call this project a waste of money
Regardless the schematic might be wonderful the implementation is horrible .
There is more : transistors used are of different make and something is telling me that the white labeled ones are really monkeys ( fakes )
Expect crosstalk and channel separation to hit the sky at least
The output capacitor is too small 0.22R cannot operate there the value is to low ... it doesn't do the job is supposed to be doing
still your parts look good but transistor amplifiers cannot be made like that
Looks like another tube guy trying to play in solid state areas ...
Sorry for that is just a personal opinion ...
that is why i was asking Richard how the noise performance was...can not tell that from looking at pictures...you can only speculate, let us hear from Richard....
i would rather listen to him than some guy with all talk and nothing to show for in terms of finished amps...
this is a diy forum in case you didn't know, not classroom wherein a teacher tells his class what to do...